Threshold Filtering

Threshold filters, following the guidance of Florida Department of Environmental Protection’s (FDEP) Division of Environmental Assessment and Restoration (DEAR) are used to exclude specific results values from the SEACAR Analysis. Based on the threshold filters, Quality Assurance / Quality Control (QAQC) Flags are inserted into the SEACAR_QAQCFlagCode and SEACAR_QAQC_Description columns of the export data. The Include column indicates whether the QAQC Flag will also indicate that data are excluded from analysis. No data are excluded from the data export, but the analysis scripts can use the Include column to exclude data (1 to include, 0 to exclude).

Continuous Water Quality threshold values
Parameter Name Units Low Threshold High Threshold Sensor Type
Dissolved Oxygen mg/L 0 50 YSI EXOs
Dissolved Oxygen mg/L 0 50 Analysis Only - 2022-04-04
Dissolved Oxygen mg/L 0 50 6600 Series
Salinity ppt 0 70 6600 Series
Salinity ppt 0 70 YSI EXOs
Salinity ppt 0 70 Analysis Only - 2022-04-04
Water Temperature Degrees C -5 45 YSI EXOs
Water Temperature Degrees C -5 45 Analysis Only - 2022-04-04
Water Temperature Degrees C -5 45 6600 Series
pH pH 2 14 Analysis Only - 2022-04-04
pH pH 2 14 6600 Series
pH pH 2 14 YSI EXOs
Dissolved Oxygen Saturation % 0 500 YSI EXOs
Dissolved Oxygen Saturation % 0 500 6600 Series
Dissolved Oxygen Saturation % 0 500 Analysis Only - 2022-04-04
Specific Conductivity mS/cm 0 100 6600 Series
Specific Conductivity mS/cm 0 200 YSI EXOs
Turbidity NTU 0 4000 YSI EXOs
Turbidity NTU 0 1000 6600 Series
Turbidity NTU 0 4000 Analysis Only - 2022-04-04
Discrete Water Quality threshold values
Parameter Name Units Low Threshold High Threshold
Dissolved Oxygen mg/L 0.000001 22
Salinity ppt 0 70
Water Temperature Degrees C 3 40
pH 2 13
Dissolved Oxygen Saturation % 0.000001 310
Specific Conductivity mS/cm 0.005000001 100
Turbidity NTU 0 -
Total Suspended Solids (TSS) mg/L 0 -
Chlorophyll a uncorrected for pheophytin ug/L 0 -
Chlorophyll a corrected for pheophytin ug/L 0 -
Secchi Depth m 0.000001 50
Light Extinction Coefficient m^1 0 -
Colored dissolved organic matter, CDOM PCU 0 -
Fluorescent dissolved organic matter, FDOM QSE 0 -
Total Nitrogen mg/L 0 -
Total Kjeldahl Nitrogen TKN mg/L 0 -
NO2+3 Filtered mg/L 0 -
NH4 Filtered mg/L 0 -
Total Phosphorus mg/L 0 -
PO4 Filtered mg/L 0 -
Ammonia- Un-ionized (NH3) mg/L 0 -
Nitrate (N) mg/L 0 -
Nitrite (N) mg/L 0 -
Nitrogen, organic mg/L 0 -
Quality Assurance Flags inserted based on threshold checks listed in Table 1 & 2
SEACAR QAQC Description Include SEACAR QAQCFlagCode
Exceeds Maximum threshold. Not verified in raw data No 2Q
Exceeds Maximum threshold. Verified in raw data No 3Q
Below Minimum threshold. Not verified in raw data No 4Q
Below Minimum threshold. Verified in raw data No 5Q
Within threshold tolerance Yes 6Q
No defined thresholds for this parameter Yes 7Q

Value Qualifiers

Value qualifier codes included within the data are used to exclude certain results from the analysis. The data are retained in the data export files, but the analysis uses the Include column to filter the results.

STORET and WIN value qualifier codes

Value qualifier codes from STORET and WIN data are examined with the database and used to populate the Include column in data exports.

Value Qualifier codes excluded from analysis
Qualifier Source Value Qualifier Include MDL Description
STORET-WIN H No 0 Value based on field kit determination; results may not be accurate
STORET-WIN J No 0 Estimated value
STORET-WIN V No 0 Analyte was detected at or above method detection limit
STORET-WIN Y No 0

Discrete Water Quality Value Qualifiers

The following value qualifiers are highlighted in the Discrete Water Quality section of this report. An exception is made for Program 476 - Charlotte Harbor Estuaries Volunteer Water Quality Monitoring Network and data flagged with Value Qualifier H are included for this program only.

H - Value based on field kit determiniation; results may not be accurate. This code shall be used if a field screening test (e.g., field gas chromatograph data, immunoassay, or vendor-supplied field kit) was used to generate the value and the field kit or method has not been recognized by the Department as equivalent to laboratory methods.

I - The reported value is greater than or equal to the laboratory method detection limit but less than the laboratory practical quantitation limit.

Q - Sample held beyond the accepted holding time. This code shall be used if the value is derived from a sample that was prepared or analyzed after the approved holding time restrictions for sample preparation or analysis.

S - Secchi disk visible to bottom of waterbody. The value reported is the depth of the waterbody at the location of the Secchi disk measurement.

U - Indicates that the compound was analyzed for but not detected. This symbol shall be used to indicate that the specified component was not detected. The value associated with the qualifier shall be the laboratory method detection limit. Unless requested by the client, less than the method detection limit values shall not be reported

Systemwide Monitoring Program (SWMP) value qualifier codes

Value qualifier codes from the SWMP continuous program are examined with the database and used to populate the Include column in data exports. SWMP Qualifier Codes are indicated by QualifierSource=SWMP.

SWMP Value Qualifier codes
Qualifier Source Value Qualifier Include Description
SWMP -1 Yes Optional parameter not collected
SWMP -2 No Missing data
SWMP -3 No Data rejected due to QA/QC
SWMP -4 No Outside low sensor range
SWMP -5 No Outside high sensor range
SWMP 0 Yes Passed initial QA/QC checks
SWMP 1 No Suspect data
SWMP 2 Yes Reserved for future use
SWMP 3 Yes
SWMP 4 Yes Historical: Pre-auto QA/QC
SWMP 5 Yes Corrected data

Water Column

The water column habitat extends from the surface of all water bodies to the bottom sediments and encompasses the different features found in the water at different depths (National Oceanographic Center, 2016). The water column habitat must be viewed in relation to its interconnectedness with other habitats. A healthy water column is an integral component in ensuring a healthy marine and coastal ecosystem. Having a flourishing marine and coastal ecosystem in Florida is necessary to support a strong economy. The health of the water column is dependent upon factors as diverse as land use (e.g., agriculture, mining, forestry practices); human population growth; emissions, (e.g., power plants, automobiles, wastewater); climate (e.g., rainfall, temperature, winds and currents); and decadal trends (e.g., El Niño/La Niña, Atlantic Multidecadal Oscillation, climate change).

The water column is composed of various physical, chemical and biological features, and only a small number of them are adequately monitored. Features of the water column that are monitored are used as indicators of the water column health and help assess the status of other habitats. These indicators include nutrient concentrations (nitrogen and phosphorus); water quality (dissolved oxygen, temperature, salinity and pH); water clarity (Secchi depth, turbidity, chlorophyll-a and colored dissolved organic matter); and nekton (fish, macroinvertebrates and megafauna).

Seasonal Kendall-Tau Analysis

Indicators must have a minimum of five to ten years, depending on the habitat, of data within the geographic range of the analysis to be included in the analysis. Ten years of data are required for discrete parameters, and five years of data are required for continuous parameters. If there are insufficient years of data, the number of years of data available will be noted and labeled as “insufficient data to conduct analysis”. Further, for the preferred Seasonal Kendall-Tau test, there must be data from at least two months in common across at least two consecutive years within the RCP managed area being analyzed. Values that pass both of these tests will be included in the analysis and be labeled as Use_In_Analysis = TRUE. Any that fail either test will be excluded from the analyses and labeled as Use_In_Analysis = FALSE.

Water Quality - Discrete

The following files were used in the discrete analysis:

  • Combined_WQ_WC_NUT_Chlorophyll_a_corrected_for_pheophytin-2024-Feb-22.txt

  • Combined_WQ_WC_NUT_Chlorophyll_a_uncorrected_for_pheophytin-2024-Feb-22.txt

  • Combined_WQ_WC_NUT_Colored_dissolved_organic_matter_CDOM-2024-Feb-22.txt

  • Combined_WQ_WC_NUT_Dissolved_Oxygen-2024-Feb-22.txt

  • Combined_WQ_WC_NUT_Dissolved_Oxygen_Saturation-2024-Feb-22.txt

  • Combined_WQ_WC_NUT_pH-2024-Feb-22.txt

  • Combined_WQ_WC_NUT_Salinity-2024-Feb-22.txt

  • Combined_WQ_WC_NUT_Secchi_Depth-2024-Feb-22.txt

  • Combined_WQ_WC_NUT_Total_Nitrogen-2024-Feb-22.txt

  • Combined_WQ_WC_NUT_Total_Phosphorus-2024-Feb-22.txt

  • Combined_WQ_WC_NUT_Total_Suspended_Solids_TSS-2024-Feb-22.txt

  • Combined_WQ_WC_NUT_Turbidity-2024-Feb-22.txt

  • Combined_WQ_WC_NUT_Water_Temperature-2024-Feb-22.txt

Chlorophyll a, Corrected for Pheophytin - Discrete Water Quality

Chlorophyll-a is monitored as a measure of microalgae growing in the water. Algae are a natural part of coastal and aquatic ecosystems but in excess can cause poor water quality and clarity, and decreased levels of dissolved oxygen.

Seasonal Kendall-Tau Trend Analysis
Discrete Water Quality
Map showing location of Discrete sampling sites for Chlorophyll a, Corrected for Pheophytin
Discrete Water Quality
The bubble size on the above plots reflects the amount of data available at each sampling site

Programs contributing data for Chlorophyll a, Corrected for Pheophytin
ProgramID N_Data YearMin YearMax
5002 1865 2004 2023
514 119 2020 2023

Program names:

5002 - Florida STORET / WIN
514 - Florida LAKEWATCH Program

Value Qualifiers

  • N_Total is total amount of data for a given year
  • N_ is the total amount of values flagged with the respective value qualifier in a given year
  • perc_ is the percent of data flagged with the respective value qualifier as a proportion of N_Total
Value Qualifiers for Chlorophyll a, Corrected for Pheophytin
Year N_Total N_I perc_I N_Q perc_Q N_U perc_U
2004 2 2 100.0
2005 120 11 9.2 14 11.7 87 72.5
2006 62 5 8.1 61 98.4
2010 53 23 43.4 1 1.9 24 45.3
2011 21 11 52.4
2013 67 1 1.5 54 80.6
2014 79 61 77.2
2015 110 9 8.2 7 6.4 66 60.0
2016 171 25 14.6 121 70.8
2017 89 19 21.4 2 2.2 67 75.3
2018 2 1 50.0
2019 4 1 25.0 3 75.0
2020 544 307 56.4 7 1.3 41 7.5
2021 470 364 77.4 1 0.2 36 7.7
2022 123 30 24.4 93 75.6
2023 67 5 7.5 61 91.0

Note: 1I - Reported value is greater than or equal to lab method detection limit, but less than quantitation limit 2Q - Sample held beyond the accepted holding time 3U - Compound was analyzed for but not detected

Programs containing Value Qualified data:

5002 - Florida STORET / WIN
514 - Florida LAKEWATCH Program

Chlorophyll a, Uncorrected for Pheophytin - Discrete Water Quality

Seasonal Kendall-Tau Trend Analysis
Discrete Water Quality
Map showing location of Discrete sampling sites for Chlorophyll a, Uncorrected for Pheophytin
Discrete Water Quality
The bubble size on the above plots reflects the amount of data available at each sampling site

Programs contributing data for Chlorophyll a, Uncorrected for Pheophytin
ProgramID N_Data YearMin YearMax
297 14986 1995 2021
5002 3074 1998 2023
509 1418 1989 2008
514 541 2001 2023
103 140 2000 2021
115 28 2000 2004
118 19 2000 2006

Program names:

297 - Florida Keys National Marine Sanctuary Water Quality Monitoring Project
5002 - Florida STORET / WIN
509 - SERC Water Quality Monitoring Network
514 - Florida LAKEWATCH Program
103 - EPA STOrage and RETrieval Data Warehouse (STORET)
115 - Environmental Monitoring Assessment Program
118 - National Aquatic Resource Surveys, National Coastal Condition Assessment

Value Qualifiers

  • N_Total is total amount of data for a given year
  • N_ is the total amount of values flagged with the respective value qualifier in a given year
  • perc_ is the percent of data flagged with the respective value qualifier as a proportion of N_Total
Value Qualifiers for Chlorophyll a, Uncorrected for Pheophytin
Year N_Total N_I perc_I N_Q perc_Q N_U perc_U
2005 779 4 0.5 23 3.0
2010 724 22 3.0 1 0.1 22 3.0
2013 500 6 1.2 34 6.8
2014 510 48 9.4
2015 646 11 1.7 7 1.1 48 7.4
2016 1013 26 2.6 106 10.5
2017 968 17 1.8 4 0.4 74 7.6
2018 891 3 0.3
2019 608 3 0.5 2 0.3
2020 933 13 1.4 7 0.8 46 4.9
2021 566 28 5.0 1 0.2 40 7.1
2022 123 21 17.1 101 82.1
2023 67 2 3.0 61 91.0

Note: 1I - Reported value is greater than or equal to lab method detection limit, but less than quantitation limit 2Q - Sample held beyond the accepted holding time 3U - Compound was analyzed for but not detected

Programs containing Value Qualified data:

514 - Florida LAKEWATCH Program
5002 - Florida STORET / WIN
297 - Florida Keys National Marine Sanctuary Water Quality Monitoring Project

Colored Dissolved Organic Matter - Discrete Water Quality

Colored Dissolved Organic Matter (CDOM) occurs naturally in every water body. It is made up of mainly plant material, algae and bacteria. The composition is determined by its source; plants, soil, algae, and wastewater are common sources.

Seasonal Kendall-Tau Trend Analysis
Discrete Water Quality
Map showing location of Discrete sampling sites for Colored Dissolved Organic Matter
Discrete Water Quality
The bubble size on the above plots reflects the amount of data available at each sampling site

Programs contributing data for Colored Dissolved Organic Matter
ProgramID N_Data YearMin YearMax
514 972 2001 2023

Program names:

514 - Florida LAKEWATCH Program

Value Qualifiers

  • N_Total is total amount of data for a given year
  • N_ is the total amount of values flagged with the respective value qualifier in a given year
  • perc_ is the percent of data flagged with the respective value qualifier as a proportion of N_Total
Value Qualifiers for Colored Dissolved Organic Matter
Year N_Total N_Q perc_Q
2019 21 3 14.3
2020 9 9 100.0
2021 10 10 100.0
2022 9 9 100.0
2023 9 9 100.0

Note: 1Q - Sample held beyond the accepted holding time

Programs containing Value Qualified data:

514 - Florida LAKEWATCH Program

Dissolved Oxygen - Discrete Water Quality

Dissolved Oxygen (DO) is a key indicator of water quality. Oxygen enters surface waters by air-sea gas exchange, by wind action, or as a byproduct of aquatic plant photosynthesis. The actual quantity of DO in aquatic environments is dependent on the above processes as well as water temperature and salinity.

Seasonal Kendall-Tau Trend Analysis
Discrete Water Quality
Map showing location of Discrete sampling sites for Dissolved Oxygen
Discrete Water Quality
The bubble size on the above plots reflects the amount of data available at each sampling site

Programs contributing data for Dissolved Oxygen
ProgramID N_Data YearMin YearMax
297 31133 1995 2021
5002 4458 2003 2023
509 2701 1989 2008
69 1731 1997 2009
95 1560 1994 2018
4049 961 2006 2022
60 798 1987 2016
103 507 1970 2021
3000 377 2015 2018
899 93 2014 2015
115 76 2000 2004
4057 59 2015 2018
102 42 1996 2000
118 17 2000 2006

Program names:

297 - Florida Keys National Marine Sanctuary Water Quality Monitoring Project
5002 - Florida STORET / WIN
509 - SERC Water Quality Monitoring Network
69 - Fisheries-Independent Monitoring (FIM) Program
95 - Harmful Algal Bloom Marine Observation Network
4049 - The South Florida Fisheries Habitat Assessment Program (FHAP)
60 - Southeast Area Monitoring and Assessment Program (SEAMAP) - Gulf of Mexico Fall & Summer Shrimp/Groundfish Survey
103 - EPA STOrage and RETrieval Data Warehouse (STORET)
3000 - Florida Keys Water Watch
899 - USGS Coral Reef Ecosystem Studies (CREST) Project
115 - Environmental Monitoring Assessment Program
4057 - Biscayne Bay Water Watch
102 - National Status and Trends Mussel Watch
118 - National Aquatic Resource Surveys, National Coastal Condition Assessment

There are no qualifying Value Qualifiers for Dissolved Oxygen in Florida Keys National Marine Sanctuary

Dissolved Oxygen Saturation - Discrete Water Quality

Seasonal Kendall-Tau Trend Analysis
Discrete Water Quality
Map showing location of Discrete sampling sites for Dissolved Oxygen Saturation
Discrete Water Quality
The bubble size on the above plots reflects the amount of data available at each sampling site

Programs contributing data for Dissolved Oxygen Saturation
ProgramID N_Data YearMin YearMax
297 25419 1995 2020
5002 3178 2009 2023
102 18 1996 1996
95 1 2017 2017

Program names:

297 - Florida Keys National Marine Sanctuary Water Quality Monitoring Project
5002 - Florida STORET / WIN
102 - National Status and Trends Mussel Watch
95 - Harmful Algal Bloom Marine Observation Network

There are no qualifying Value Qualifiers for Dissolved Oxygen Saturation in Florida Keys National Marine Sanctuary

pH - Discrete Water Quality

The pH of water is the measure of how acidic or basic the water body is on a scale of 0-14, with lower readings indicating acidic and higher readings indicating basic, and a pH of 7 being neutral. Florida’s natural waters fall between 6.5 and 8.5 on this scale. A water body’s pH can change due to precipitation, geology, vegetation, water pollution and air pollution.

Seasonal Kendall-Tau Trend Analysis
Discrete Water Quality
Map showing location of Discrete sampling sites for pH
Discrete Water Quality
The bubble size on the above plots reflects the amount of data available at each sampling site

Programs contributing data for pH
ProgramID N_Data YearMin YearMax
5002 4565 2003 2023
69 1721 1997 2009
4049 1040 2005 2022
509 545 2002 2008
3000 377 2015 2018
95 142 1994 2018
899 88 2014 2015
103 85 1970 2021
115 76 2000 2004
4057 59 2015 2018
297 36 2003 2011
3 21 2009 2012

Program names:

5002 - Florida STORET / WIN
69 - Fisheries-Independent Monitoring (FIM) Program
4049 - The South Florida Fisheries Habitat Assessment Program (FHAP)
509 - SERC Water Quality Monitoring Network
3000 - Florida Keys Water Watch
95 - Harmful Algal Bloom Marine Observation Network
899 - USGS Coral Reef Ecosystem Studies (CREST) Project
103 - EPA STOrage and RETrieval Data Warehouse (STORET)
115 - Environmental Monitoring Assessment Program
4057 - Biscayne Bay Water Watch
297 - Florida Keys National Marine Sanctuary Water Quality Monitoring Project
3 - Atlantic Oceanographic and Meteorological Laboratory (AOML) South Florida Program Synoptic Shipboard Surveys

There are no qualifying Value Qualifiers for pH in Florida Keys National Marine Sanctuary

Salinity - Discrete Water Quality

Salinity is a measure of the amount of salt in the water. In estuarine ecosystems, salinity is influenced by precipitation, evaporation, surface-water inputs, and exchange with coastal waters.

Seasonal Kendall-Tau Trend Analysis
Discrete Water Quality
Map showing location of Discrete sampling sites for Salinity
Discrete Water Quality
The bubble size on the above plots reflects the amount of data available at each sampling site

Programs contributing data for Salinity
ProgramID N_Data YearMin YearMax
297 30806 1995 2021
5002 4557 2003 2023
3 3864 1998 2022
509 2581 1989 2008
965 2317 2005 2011
95 1889 1955 2018
69 1729 1997 2009
62 1142 1993 2019
4049 1105 2005 2022
60 798 1987 2016
3000 379 2015 2018
118 109 2015 2021
899 82 2014 2015
115 76 2000 2004
102 60 1996 2000
4057 59 2015 2018

Program names:

297 - Florida Keys National Marine Sanctuary Water Quality Monitoring Project
5002 - Florida STORET / WIN
3 - Atlantic Oceanographic and Meteorological Laboratory (AOML) South Florida Program Synoptic Shipboard Surveys
509 - SERC Water Quality Monitoring Network
965 - South Florida Seagrass Fish and Invertebrate Assessment Network
95 - Harmful Algal Bloom Marine Observation Network
69 - Fisheries-Independent Monitoring (FIM) Program
62 - Southeast Area Monitoring and Assessment Program (SEAMAP) - Gulf of Mexico Reef Fish Survey
4049 - The South Florida Fisheries Habitat Assessment Program (FHAP)
60 - Southeast Area Monitoring and Assessment Program (SEAMAP) - Gulf of Mexico Fall & Summer Shrimp/Groundfish Survey
3000 - Florida Keys Water Watch
118 - National Aquatic Resource Surveys, National Coastal Condition Assessment
899 - USGS Coral Reef Ecosystem Studies (CREST) Project
115 - Environmental Monitoring Assessment Program
102 - National Status and Trends Mussel Watch
4057 - Biscayne Bay Water Watch

There are no qualifying Value Qualifiers for Salinity in Florida Keys National Marine Sanctuary

Secchi Depth - Discrete Water Quality

Secchi depth is a measure of the transparency or clarity of the water by a device called a Secchi disk. A Secchi disk is a black and white disk that is lowered into the water on a cord. The Secchi depth is the depth at which the disk can no longer be seen. The deeper the Secchi depth, the greater the water clarity.

Seasonal Kendall-Tau Trend Analysis
Discrete Water Quality
Map showing location of Discrete sampling sites for Secchi Depth
Discrete Water Quality
The bubble size on the above plots reflects the amount of data available at each sampling site

Programs contributing data for Secchi Depth
ProgramID N_Data YearMin YearMax
514 2369 1998 2023
69 1738 1997 2009
3000 373 2015 2018
5002 340 2005 2022
4049 294 2005 2022
60 30 1996 2010
115 21 2000 2004

Program names:

514 - Florida LAKEWATCH Program
69 - Fisheries-Independent Monitoring (FIM) Program
3000 - Florida Keys Water Watch
5002 - Florida STORET / WIN
4049 - The South Florida Fisheries Habitat Assessment Program (FHAP)
60 - Southeast Area Monitoring and Assessment Program (SEAMAP) - Gulf of Mexico Fall & Summer Shrimp/Groundfish Survey
115 - Environmental Monitoring Assessment Program

Value Qualifiers

  • N_Total is total amount of data for a given year
  • N_ is the total amount of values flagged with the respective value qualifier in a given year
  • perc_ is the percent of data flagged with the respective value qualifier as a proportion of N_Total
Value Qualifiers for Secchi Depth
Year N_Total N_S perc_S
2015 210 27 12.9
2016 341 66 19.4
2017 214 73 34.1
2019 39 6 15.4
2020 43 18 41.9
2021 47 26 55.3
2022 85 48 56.5
2023 28 13 46.4

Note: 1S - Secchi disk visible to bottom of waterbody

Programs containing Value Qualified data:

514 - Florida LAKEWATCH Program
5002 - Florida STORET / WIN

Total Nitrogen - Discrete Water Quality

Nitrogen and Phosphorous are key nutrients that provide nourishment essential for the growth and maintenance of aquatic plants and animals; however, excess nutrients can cause harmful algal blooms and other water quality concerns. Nutrients enter water bodies several ways, including runoff from rain events and atmospheric deposition from natural and industrial sources.

Total Nitrogen Calculation:

The logic for calculated Total Nitrogen was provided by Kevin O’Donnell and colleagues at FDEP (with the help of Jay Silvanima, Watershed Monitoring Section). The following logic is used, in this order, based on the availability of specific nitrogen components.

  1. TN = TKN + NO3O2;
  2. TN = TKN + NO3 + NO2;
  3. TN = ORGN + NH4 + NO3O2;
  4. TN = ORGN + NH4 + NO2 + NO3;
  5. TN = TKN + NO3;
  6. TN = ORGN + NH4 + NO3;

Additional Information:

  • Rules for use of sample fraction:
    • FDEP report that if both “Total” and “Dissolved” are reported, only “Total” is used. If the total is not reported, they do use dissolved as a best available replacement.
    • An analysis of all SEACAR data shows that 90% of all possible TN calculations can be done using nitrogen components with the same sample fraction, rather than use nitrogen components with mixed total/dissolved sample fractions. In other words, TN can be calculated when TKN and NO3O2 are both total sample fraction, or when both are dissolved sample fraction. This is important, because then the calculated TN value is not based on components with mixed sample fractions.
  • Values inserted into data:
    • ParameterName = “Total Nitrogen”
    • SEACAR_QAQCFlagCode = “1Q”
    • SEACAR_QAQC_Description = “SEACAR Calculated”
      Seasonal Kendall-Tau Trend Analysis
      Discrete Water Quality
      Map showing location of Discrete sampling sites for Total Nitrogen
      Discrete Water Quality
      The bubble size on the above plots reflects the amount of data available at each sampling site
Programs contributing data for Total Nitrogen
ProgramID N_Data YearMin YearMax
297 24805 1995 2021
5002 4582 1998 2023
514 2756 1998 2023
509 1424 1989 2008
103 136 2000 2006
115 28 2000 2004

Program names:

297 - Florida Keys National Marine Sanctuary Water Quality Monitoring Project
5002 - Florida STORET / WIN
514 - Florida LAKEWATCH Program
509 - SERC Water Quality Monitoring Network
103 - EPA STOrage and RETrieval Data Warehouse (STORET)
115 - Environmental Monitoring Assessment Program

Value Qualifiers

  • N_Total is total amount of data for a given year
  • N_ is the total amount of values flagged with the respective value qualifier in a given year
  • perc_ is the percent of data flagged with the respective value qualifier as a proportion of N_Total
Value Qualifiers for Total Nitrogen
Year N_Total N_I perc_I N_Q perc_Q N_U perc_U
2005 1439 22 1.5
2006 1406 86 6.1 1 0.1
2014 832 14 1.7
2015 1062 160 15.1 7 0.7 6 0.6
2016 1630 617 37.9 36 2.2 4 0.2
2017 1487 644 43.3 60 4.0
2018 1419 601 42.4 31 2.2
2019 1145 477 41.7 24 2.1 39 3.4
2020 2090 696 33.3 61 2.9 18 0.9
2021 1212 495 40.8 125 10.3

Note: 1I - Reported value is greater than or equal to lab method detection limit, but less than quantitation limit 2Q - Sample held beyond the accepted holding time 3U - Compound was analyzed for but not detected

Programs containing Value Qualified data:

297 - Florida Keys National Marine Sanctuary Water Quality Monitoring Project
5002 - Florida STORET / WIN
514 - Florida LAKEWATCH Program

Total Phosphorus - Discrete Water Quality

Seasonal Kendall-Tau Trend Analysis
Discrete Water Quality
Map showing location of Discrete sampling sites for Total Phosphorus
Discrete Water Quality
The bubble size on the above plots reflects the amount of data available at each sampling site

Programs contributing data for Total Phosphorus
ProgramID N_Data YearMin YearMax
297 24832 1995 2021
514 2764 1998 2023
5002 1898 2005 2023
509 1425 1989 2008
103 182 1970 2021
115 28 2000 2004

Program names:

297 - Florida Keys National Marine Sanctuary Water Quality Monitoring Project
514 - Florida LAKEWATCH Program
5002 - Florida STORET / WIN
509 - SERC Water Quality Monitoring Network
103 - EPA STOrage and RETrieval Data Warehouse (STORET)
115 - Environmental Monitoring Assessment Program

Value Qualifiers

  • N_Total is total amount of data for a given year
  • N_ is the total amount of values flagged with the respective value qualifier in a given year
  • perc_ is the percent of data flagged with the respective value qualifier as a proportion of N_Total
Value Qualifiers for Total Phosphorus
Year N_Total N_I perc_I N_Q perc_Q N_U perc_U
2005 1232 28 2.3 116 9.4
2006 1134 12 1.1 48 4.2
2010 1097 76 6.9 34 3.1
2011 966 19 2.0 11 1.1
2012 764 1 0.1 20 2.6
2013 747 1 0.1 6 0.8
2015 950 8 0.8
2016 1515 43 2.8 3 0.2
2017 1484 71 4.8 3 0.2 1 0.1
2018 1419 1 0.1 24 1.7
2019 1171 6 0.5 3 0.3
2020 2164 88 4.1 30 1.4 496 22.9
2021 1271 116 9.1 2 0.2 408 32.1
2022 216 166 76.8 24 11.1
2023 97 52 53.6 36 37.1

Note: 1I - Reported value is greater than or equal to lab method detection limit, but less than quantitation limit 2Q - Sample held beyond the accepted holding time 3U - Compound was analyzed for but not detected

Programs containing Value Qualified data:

5002 - Florida STORET / WIN
514 - Florida LAKEWATCH Program
297 - Florida Keys National Marine Sanctuary Water Quality Monitoring Project

Total Suspended Solids - Discrete Water Quality

Total Suspended Solids (TSS) are solid particles suspended in water that exceed 2 microns in size and can be trapped by a filter.

Seasonal Kendall-Tau Trend Analysis
Discrete Water Quality
Map showing location of Discrete sampling sites for Total Suspended Solids
Discrete Water Quality
The bubble size on the above plots reflects the amount of data available at each sampling site

Programs contributing data for Total Suspended Solids
ProgramID N_Data YearMin YearMax
5002 518 2007 2023
3 342 2001 2012
103 1 2020 2020

Program names:

5002 - Florida STORET / WIN
3 - Atlantic Oceanographic and Meteorological Laboratory (AOML) South Florida Program Synoptic Shipboard Surveys
103 - EPA STOrage and RETrieval Data Warehouse (STORET)

Value Qualifiers

  • N_Total is total amount of data for a given year
  • N_ is the total amount of values flagged with the respective value qualifier in a given year
  • perc_ is the percent of data flagged with the respective value qualifier as a proportion of N_Total
Value Qualifiers for Total Suspended Solids
Year N_Total N_I perc_I N_Q perc_Q N_U perc_U
2007 72 5 6.9
2008 69 1 1.4
2010 84 30 35.7
2014 15 2 13.3
2015 30 12 40.0 6 20.0
2016 82 40 48.8 36 43.9
2017 88 50 56.8 1 1.1 30 34.1
2020 4 3 75.0
2021 13 7 53.9
2022 35 20 57.1 15 42.9
2023 3 2 66.7 1 33.3

Note: 1I - Reported value is greater than or equal to lab method detection limit, but less than quantitation limit 2Q - Sample held beyond the accepted holding time 3U - Compound was analyzed for but not detected

Programs containing Value Qualified data:

5002 - Florida STORET / WIN

Turbidity - Discrete Water Quality

Turbidity results from suspended solids in the water, including silts, clays, tannins, industrial wastes, sewage and plankton, which are all factors that contribute to how clouded or murky a water column is. Turbidity is caused by soil erosion, excess nutrients, pollutants, and physical forces such as winds, currents and bottom feeders.

Seasonal Kendall-Tau Trend Analysis
Discrete Water Quality
Map showing location of Discrete sampling sites for Turbidity
Discrete Water Quality
The bubble size on the above plots reflects the amount of data available at each sampling site

Programs contributing data for Turbidity
ProgramID N_Data YearMin YearMax
297 25717 1995 2021
5002 1920 1994 2023
509 1404 1991 2008
965 1157 2005 2011
3000 370 2015 2018
103 61 2005 2021

Program names:

297 - Florida Keys National Marine Sanctuary Water Quality Monitoring Project
5002 - Florida STORET / WIN
509 - SERC Water Quality Monitoring Network
965 - South Florida Seagrass Fish and Invertebrate Assessment Network
3000 - Florida Keys Water Watch
103 - EPA STOrage and RETrieval Data Warehouse (STORET)

Value Qualifiers

  • N_Total is total amount of data for a given year
  • N_ is the total amount of values flagged with the respective value qualifier in a given year
  • perc_ is the percent of data flagged with the respective value qualifier as a proportion of N_Total
Value Qualifiers for Turbidity
Year N_Total N_I perc_I N_Q perc_Q N_U perc_U
1995 743 7 0.9
1996 798 4 0.5
2003 1021 10 1.0
2004 1008 31 3.1
2005 1198 32 2.7
2006 1217 4 0.3
2007 1152 7 0.6
2008 1320 20 1.5
2009 1301 24 1.8
2010 1358 26 1.9 1 0.1
2011 1145 26 2.3
2012 755 25 3.3
2013 724 23 3.2 1 0.1
2014 1448 34 2.4
2015 1338 17 1.3
2016 1502 12 0.8
2017 1605 2 0.1 5 0.3
2020 1579 1 0.1 1 0.1
2021 870 7 0.8 1 0.1 1 0.1
2022 167 57 34.1 4 2.4
2023 76 30 39.5 2 2.6

Note: 1I - Reported value is greater than or equal to lab method detection limit, but less than quantitation limit 2Q - Sample held beyond the accepted holding time 3U - Compound was analyzed for but not detected

Programs containing Value Qualified data:

5002 - Florida STORET / WIN

Water Temperature - Discrete Water Quality

Temperature determines the capacity of water to hold oxygen. Cooler water can hold more dissolved oxygen because water molecules are more tightly packed, making it harder for oxygen to escape. Additionally, as water temperature increases, fish and other aquatic organisms become more active and consume oxygen at a faster rate.

Seasonal Kendall-Tau Trend Analysis
Discrete Water Quality
Map showing location of Discrete sampling sites for Water Temperature
Discrete Water Quality
The bubble size on the above plots reflects the amount of data available at each sampling site

Programs contributing data for Water Temperature
ProgramID N_Data YearMin YearMax
297 30767 1995 2021
5002 4938 2003 2023
509 2591 1989 2008
965 2317 2005 2011
95 1956 1955 2018
69 1764 1997 2009
4049 1105 2005 2022
982 916 2014 2021
60 798 1987 2016
103 788 1970 2021
3 403 1998 2012
3000 374 2015 2018
899 85 2014 2015
115 76 2000 2004
4057 59 2015 2018
102 43 1996 2000

Program names:

297 - Florida Keys National Marine Sanctuary Water Quality Monitoring Project
5002 - Florida STORET / WIN
509 - SERC Water Quality Monitoring Network
965 - South Florida Seagrass Fish and Invertebrate Assessment Network
95 - Harmful Algal Bloom Marine Observation Network
69 - Fisheries-Independent Monitoring (FIM) Program
4049 - The South Florida Fisheries Habitat Assessment Program (FHAP)
982 - Florida Keys Bleach Watch
60 - Southeast Area Monitoring and Assessment Program (SEAMAP) - Gulf of Mexico Fall & Summer Shrimp/Groundfish Survey
103 - EPA STOrage and RETrieval Data Warehouse (STORET)
3 - Atlantic Oceanographic and Meteorological Laboratory (AOML) South Florida Program Synoptic Shipboard Surveys
3000 - Florida Keys Water Watch
899 - USGS Coral Reef Ecosystem Studies (CREST) Project
115 - Environmental Monitoring Assessment Program
4057 - Biscayne Bay Water Watch
102 - National Status and Trends Mussel Watch

There are no qualifying Value Qualifiers for Water Temperature in Florida Keys National Marine Sanctuary

Water Quality - Continuous

The following files were used in the continuous analysis:

  • Combined_WQ_WC_NUT_cont_Dissolved_Oxygen_SE-2024-Feb-22.txt

  • Combined_WQ_WC_NUT_cont_Dissolved_Oxygen_Saturation_SE-2024-Feb-22.txt

  • Combined_WQ_WC_NUT_cont_pH_SE-2024-Feb-22.txt

  • Combined_WQ_WC_NUT_cont_Salinity_SE-2024-Feb-22.txt

  • Combined_WQ_WC_NUT_cont_Turbidity_SE-2024-Feb-22.txt

  • Combined_WQ_WC_NUT_cont_Water_Temperature_SE-2024-Feb-22.txt

Continuous Water Quality
Map showing Continuous Water Quality Monitoring sampling locations within the boundaries of Florida Keys National Marine Sanctuary. Sites marked as Use In Analysis are featured in this report.

Salinity - Continuous Water Quality

1B

Atlantic Oceanographic and Meteorological Laboratory (AOML) South Florida Program Moored Instrument Array (2)
Continuous Water Quality

Water Temperature - Continuous Water Quality

1B

Atlantic Oceanographic and Meteorological Laboratory (AOML) South Florida Program Moored Instrument Array (2)
Continuous Water Quality

KYWF1

National Data Buoy Center (5)
Continuous Water Quality

LONF1

National Data Buoy Center (5)
Continuous Water Quality

MLRF1

National Data Buoy Center (5)
Continuous Water Quality

SANF1

National Data Buoy Center (5)
Continuous Water Quality

SMKF1

National Data Buoy Center (5)
Continuous Water Quality

214

Florida Keys National Marine Sanctuary Seagrass Monitoring Project (296)
Continuous Water Quality

215

Florida Keys National Marine Sanctuary Seagrass Monitoring Project (296)
Continuous Water Quality

216

Florida Keys National Marine Sanctuary Seagrass Monitoring Project (296)
Continuous Water Quality

220

Florida Keys National Marine Sanctuary Seagrass Monitoring Project (296)
Continuous Water Quality

223

Florida Keys National Marine Sanctuary Seagrass Monitoring Project (296)
Continuous Water Quality

225

Florida Keys National Marine Sanctuary Seagrass Monitoring Project (296)
Continuous Water Quality

227

Florida Keys National Marine Sanctuary Seagrass Monitoring Project (296)
Continuous Water Quality

235

Florida Keys National Marine Sanctuary Seagrass Monitoring Project (296)
Continuous Water Quality

237

Florida Keys National Marine Sanctuary Seagrass Monitoring Project (296)
Continuous Water Quality

239

Florida Keys National Marine Sanctuary Seagrass Monitoring Project (296)
Continuous Water Quality

241

Florida Keys National Marine Sanctuary Seagrass Monitoring Project (296)
Continuous Water Quality

243

Florida Keys National Marine Sanctuary Seagrass Monitoring Project (296)
Continuous Water Quality

248

Florida Keys National Marine Sanctuary Seagrass Monitoring Project (296)
Continuous Water Quality

255

Florida Keys National Marine Sanctuary Seagrass Monitoring Project (296)
Continuous Water Quality

260

Florida Keys National Marine Sanctuary Seagrass Monitoring Project (296)
Continuous Water Quality

267

Florida Keys National Marine Sanctuary Seagrass Monitoring Project (296)
Continuous Water Quality

269

Florida Keys National Marine Sanctuary Seagrass Monitoring Project (296)
Continuous Water Quality

271

Florida Keys National Marine Sanctuary Seagrass Monitoring Project (296)
Continuous Water Quality

273

Florida Keys National Marine Sanctuary Seagrass Monitoring Project (296)
Continuous Water Quality

276

Florida Keys National Marine Sanctuary Seagrass Monitoring Project (296)
Continuous Water Quality

284

Florida Keys National Marine Sanctuary Seagrass Monitoring Project (296)
Continuous Water Quality

285

Florida Keys National Marine Sanctuary Seagrass Monitoring Project (296)
Continuous Water Quality

287

Florida Keys National Marine Sanctuary Seagrass Monitoring Project (296)
Continuous Water Quality

291

Florida Keys National Marine Sanctuary Seagrass Monitoring Project (296)
Continuous Water Quality

294

Florida Keys National Marine Sanctuary Seagrass Monitoring Project (296)
Continuous Water Quality

296

Florida Keys National Marine Sanctuary Seagrass Monitoring Project (296)
Continuous Water Quality

305

Florida Keys National Marine Sanctuary Seagrass Monitoring Project (296)
Continuous Water Quality

307

Florida Keys National Marine Sanctuary Seagrass Monitoring Project (296)
Continuous Water Quality

309

Florida Keys National Marine Sanctuary Seagrass Monitoring Project (296)
Continuous Water Quality

314

Florida Keys National Marine Sanctuary Seagrass Monitoring Project (296)
Continuous Water Quality

500

Florida Keys National Marine Sanctuary Seagrass Monitoring Project (296)
Continuous Water Quality

501

Florida Keys National Marine Sanctuary Seagrass Monitoring Project (296)
Continuous Water Quality

506

Florida Keys National Marine Sanctuary Seagrass Monitoring Project (296)
Continuous Water Quality

507

Florida Keys National Marine Sanctuary Seagrass Monitoring Project (296)
Continuous Water Quality

508

Florida Keys National Marine Sanctuary Seagrass Monitoring Project (296)
Continuous Water Quality

509

Florida Keys National Marine Sanctuary Seagrass Monitoring Project (296)
Continuous Water Quality

SB

Florida Keys National Marine Sanctuary Seagrass Monitoring Project (296)
Continuous Water Quality

Crocker

USGS Coral Reef Ecosystem Studies (CREST) Project (899)
Continuous Water Quality

Molasses

USGS Coral Reef Ecosystem Studies (CREST) Project (899)
Continuous Water Quality

Sombrero

USGS Coral Reef Ecosystem Studies (CREST) Project (899)
Continuous Water Quality

11

Water Temperature on Coral Reefs in the Florida Keys (986)
Continuous Water Quality

12

Water Temperature on Coral Reefs in the Florida Keys (986)
Continuous Water Quality

14

Water Temperature on Coral Reefs in the Florida Keys (986)
Continuous Water Quality

15

Water Temperature on Coral Reefs in the Florida Keys (986)
Continuous Water Quality

18

Water Temperature on Coral Reefs in the Florida Keys (986)
Continuous Water Quality

21

Water Temperature on Coral Reefs in the Florida Keys (986)
Continuous Water Quality

22

Water Temperature on Coral Reefs in the Florida Keys (986)
Continuous Water Quality

23

Water Temperature on Coral Reefs in the Florida Keys (986)
Continuous Water Quality

24

Water Temperature on Coral Reefs in the Florida Keys (986)
Continuous Water Quality

25

Water Temperature on Coral Reefs in the Florida Keys (986)
Continuous Water Quality

26

Water Temperature on Coral Reefs in the Florida Keys (986)
Continuous Water Quality

30

Water Temperature on Coral Reefs in the Florida Keys (986)
Continuous Water Quality

32

Water Temperature on Coral Reefs in the Florida Keys (986)
Continuous Water Quality

33

Water Temperature on Coral Reefs in the Florida Keys (986)
Continuous Water Quality

34

Water Temperature on Coral Reefs in the Florida Keys (986)
Continuous Water Quality

35

Water Temperature on Coral Reefs in the Florida Keys (986)
Continuous Water Quality

36

Water Temperature on Coral Reefs in the Florida Keys (986)
Continuous Water Quality

37

Water Temperature on Coral Reefs in the Florida Keys (986)
Continuous Water Quality

38

Water Temperature on Coral Reefs in the Florida Keys (986)
Continuous Water Quality

39

Water Temperature on Coral Reefs in the Florida Keys (986)
Continuous Water Quality

40

Water Temperature on Coral Reefs in the Florida Keys (986)
Continuous Water Quality

50

Water Temperature on Coral Reefs in the Florida Keys (986)
Continuous Water Quality

51

Water Temperature on Coral Reefs in the Florida Keys (986)
Continuous Water Quality

52

Water Temperature on Coral Reefs in the Florida Keys (986)
Continuous Water Quality

53

Water Temperature on Coral Reefs in the Florida Keys (986)
Continuous Water Quality

54

Water Temperature on Coral Reefs in the Florida Keys (986)
Continuous Water Quality

55

Water Temperature on Coral Reefs in the Florida Keys (986)
Continuous Water Quality

56

Water Temperature on Coral Reefs in the Florida Keys (986)
Continuous Water Quality

57

Water Temperature on Coral Reefs in the Florida Keys (986)
Continuous Water Quality

58

Water Temperature on Coral Reefs in the Florida Keys (986)
Continuous Water Quality

59

Water Temperature on Coral Reefs in the Florida Keys (986)
Continuous Water Quality

60

Water Temperature on Coral Reefs in the Florida Keys (986)
Continuous Water Quality

61

Water Temperature on Coral Reefs in the Florida Keys (986)
Continuous Water Quality

70

Water Temperature on Coral Reefs in the Florida Keys (986)
Continuous Water Quality

72

Water Temperature on Coral Reefs in the Florida Keys (986)
Continuous Water Quality

73

Water Temperature on Coral Reefs in the Florida Keys (986)
Continuous Water Quality

74

Water Temperature on Coral Reefs in the Florida Keys (986)
Continuous Water Quality

75

Water Temperature on Coral Reefs in the Florida Keys (986)
Continuous Water Quality

76

Water Temperature on Coral Reefs in the Florida Keys (986)
Continuous Water Quality

77

Water Temperature on Coral Reefs in the Florida Keys (986)
Continuous Water Quality

78

Water Temperature on Coral Reefs in the Florida Keys (986)
Continuous Water Quality

79

Water Temperature on Coral Reefs in the Florida Keys (986)
Continuous Water Quality

80

Water Temperature on Coral Reefs in the Florida Keys (986)
Continuous Water Quality

81

Water Temperature on Coral Reefs in the Florida Keys (986)
Continuous Water Quality

83

Water Temperature on Coral Reefs in the Florida Keys (986)
Continuous Water Quality

FKNMS_200YR_HD

Continuous Bottom Temperature Measurements along the Florida Reef Tract (989)
Continuous Water Quality

FKNMS_7MILE_BR

Continuous Bottom Temperature Measurements along the Florida Reef Tract (989)
Continuous Water Quality

FKNMS_9FT_SHOAL

Continuous Bottom Temperature Measurements along the Florida Reef Tract (989)
Continuous Water Quality

FKNMS_ALLIGATOR

Continuous Bottom Temperature Measurements along the Florida Reef Tract (989)
Continuous Water Quality

FKNMS_BHONDA_BR

Continuous Bottom Temperature Measurements along the Florida Reef Tract (989)
Continuous Water Quality

FKNMS_BOCA_GRND

Continuous Bottom Temperature Measurements along the Florida Reef Tract (989)
Continuous Water Quality

FKNMS_BULLARD

Continuous Bottom Temperature Measurements along the Florida Reef Tract (989)
Continuous Water Quality

FKNMS_CARD_SND

Continuous Bottom Temperature Measurements along the Florida Reef Tract (989)
Continuous Water Quality

FKNMS_CARYSFORT

Continuous Bottom Temperature Measurements along the Florida Reef Tract (989)
Continuous Water Quality

FKNMS_DIEGO_TER

Continuous Bottom Temperature Measurements along the Florida Reef Tract (989)
Continuous Water Quality

FKNMS_ELPIS

Continuous Bottom Temperature Measurements along the Florida Reef Tract (989)
Continuous Water Quality

FKNMS_GRECIAN

Continuous Bottom Temperature Measurements along the Florida Reef Tract (989)
Continuous Water Quality

FKNMS_HARBORKEY

Continuous Bottom Temperature Measurements along the Florida Reef Tract (989)
Continuous Water Quality

FKNMS_HEN&CHIX

Continuous Bottom Temperature Measurements along the Florida Reef Tract (989)
Continuous Water Quality

FKNMS_KW_CHANL

Continuous Bottom Temperature Measurements along the Florida Reef Tract (989)
Continuous Water Quality

FKNMS_LONG_KEY

Continuous Bottom Temperature Measurements along the Florida Reef Tract (989)
Continuous Water Quality

FKNMS_LOOE_BACK

Continuous Bottom Temperature Measurements along the Florida Reef Tract (989)
Continuous Water Quality

FKNMS_LOOE_BUOY5

Continuous Bottom Temperature Measurements along the Florida Reef Tract (989)
Continuous Water Quality

FKNMS_LOOE_ISELIN

Continuous Bottom Temperature Measurements along the Florida Reef Tract (989)
Continuous Water Quality

FKNMS_MOLASSES

Continuous Bottom Temperature Measurements along the Florida Reef Tract (989)
Continuous Water Quality

FKNMS_NEWGROUND

Continuous Bottom Temperature Measurements along the Florida Reef Tract (989)
Continuous Water Quality

FKNMS_PILLAR

Continuous Bottom Temperature Measurements along the Florida Reef Tract (989)
Continuous Water Quality

FKNMS_SAND_KEY

Continuous Bottom Temperature Measurements along the Florida Reef Tract (989)
Continuous Water Quality

FKNMS_SMITH_SHL

Continuous Bottom Temperature Measurements along the Florida Reef Tract (989)
Continuous Water Quality

FKNMS_SNAKE_CRK

Continuous Bottom Temperature Measurements along the Florida Reef Tract (989)
Continuous Water Quality

FKNMS_SOMBRERO

Continuous Bottom Temperature Measurements along the Florida Reef Tract (989)
Continuous Water Quality

FKNMS_SPRIGGER

Continuous Bottom Temperature Measurements along the Florida Reef Tract (989)
Continuous Water Quality

FKNMS_TENN_REEF

Continuous Bottom Temperature Measurements along the Florida Reef Tract (989)
Continuous Water Quality

FKNMS_WELLWOOD

Continuous Bottom Temperature Measurements along the Florida Reef Tract (989)
Continuous Water Quality

FKNMS_WS_JACKYL

Continuous Bottom Temperature Measurements along the Florida Reef Tract (989)
Continuous Water Quality

FKNMS_W_SAMBO

Continuous Bottom Temperature Measurements along the Florida Reef Tract (989)
Continuous Water Quality

All Stations Combined by Program

Continuous Water Quality
Continuous Water Quality
Seasonal Kendall-Tau Results for All Stations - Water Temperature
Station N_Data N_Years Period of Record Median tau SennIntercept SennSlope p
1B 86204 6 2003 - 2008 26.38 0.26 25.73 0.16 0.0392
Continuous Water Quality
Continuous Water Quality
Seasonal Kendall-Tau Results for All Stations - Water Temperature
Station N_Data N_Years Period of Record Median tau SennIntercept SennSlope p
KYWF1 1398505 19 2005 - 2023 27.6 0.32 26.67 0.08 0.0000
LONF1 205971 28 1992 - 2019 26.6 0.07 26.34 0.01 0.0825
MLRF1 256798 33 1987 - 2019 26.5 0.10 26.49 0.01 0.0043
SANF1 117833 15 1991 - 2005 26.7 -0.03 26.69 0.00 0.6199
SMKF1 154326 21 1988 - 2008 26.8 0.34 26.24 0.06 0.0000
Continuous Water Quality
Continuous Water Quality
Seasonal Kendall-Tau Results for All Stations - Water Temperature
Station N_Data N_Years Period of Record Median tau SennIntercept SennSlope p
214 136333 18 2002 - 2019 26.52 0.27 25.84 0.07 0.0000
215 133286 16 2003 - 2018 26.74 0.26 26.42 0.05 0.0000
216 98535 17 2002 - 2018 26.26 0.31 25.86 0.06 0.0000
220 126033 17 2003 - 2019 26.52 0.25 25.94 0.06 0.0000
223 133082 18 2002 - 2019 26.89 0.3 25.84 0.08 0.0000
225 117692 17 2002 - 2019 26.82 0.32 26.32 0.06 0.0000
227 105351 17 2003 - 2019 26.67 0.29 26.06 0.08 0.0000
235 128499 18 2002 - 2019 27.14 0.28 25.77 0.08 0.0000
237 122250 18 2002 - 2019 26.38 0.31 25.74 0.09 0.0000
239 111523 17 2002 - 2018 26.92 0.24 25.96 0.07 0.0001
241 127914 18 2002 - 2019 27.26 0.27 25.91 0.09 0.0000
243 121593 18 2002 - 2019 26.62 0.3 26 0.07 0.0000
248 111702 18 2002 - 2019 26.79 0.31 25.54 0.08 0.0000
255 119939 18 2002 - 2019 26.35 0.24 25.73 0.07 0.0000
260 97832 16 2002 - 2019 27.07 0.28 26.22 0.08 0.0000
267 99735 18 2002 - 2019 26.57 0.24 25.64 0.05 0.0002
269 106458 17 2002 - 2019 26.74 0.2 26.02 0.05 0.0010
271 133627 18 2002 - 2019 26.92 0.26 25.77 0.07 0.0000
273 129817 18 2002 - 2019 27.16 0.24 26.16 0.05 0.0000
276 123833 18 2002 - 2019 26.87 0.21 26.15 0.05 0.0002
284 123977 17 2002 - 2019 26.86 0.28 25.14 0.09 0.0000
285 121423 18 2002 - 2019 26.86 0.25 26.17 0.07 0.0000
287 133008 18 2002 - 2019 26.87 0.29 25.84 0.08 0.0000
291 116240 18 2002 - 2019 26.38 0.26 25.72 0.09 0.0000
294 112348 18 2002 - 2019 26.92 0.27 25.52 0.09 0.0000
296 114497 17 2002 - 2019 27.36 0.21 25.45 0.07 0.0002
305 122296 18 2002 - 2019 26.43 0.22 26.07 0.06 0.0001
307 110802 17 2002 - 2019 26.74 0.22 25.73 0.07 0.0003
309 107410 18 2002 - 2019 27.85 0.27 26.07 0.06 0.0000
314 110686 18 2002 - 2019 27.41 0.23 25.63 0.06 0.0002
500 69048 8 2012 - 2019 27.33 0.23 26.79 0.12 0.0074
501 34805 5 2012 - 2018 27.48 0.11 27.55 0.05 0.6481
502 22765 4 2016 - 2019 26.70 - - - -
503 7490 1 2016 - 2016 28.74 - - - -
504 4339 1 2018 - 2018 29.84 - - - -
506 35198 7 2012 - 2019 27.41 0.04 27.2 0.05 0.7350
507 47517 8 2012 - 2019 27.36 0.18 27.48 0.09 0.1213
508 24021 6 2012 - 2019 26.67 0.33 26.54 0.07 0.2949
509 38607 8 2012 - 2019 27.70 0.05 27.79 0.11 0.4739
SB 145514 19 2001 - 2019 26.34 0.23 25.9 0.06 0.0000
Continuous Water Quality
Continuous Water Quality
Seasonal Kendall-Tau Results for All Stations - Water Temperature
Station N_Data N_Years Period of Record Median tau SennIntercept SennSlope p
Crocker 322670 10 2013 - 2022 27.32 0.15 27.07 0.03 0.0436
Molasses 140713 5 2009 - 2013 26.72 -0.03 26.61 -0.04 0.9247
Sombrero 459354 14 2009 - 2022 27.16 0.26 26.83 0.05 0.0000
Continuous Water Quality
Continuous Water Quality
Seasonal Kendall-Tau Results for All Stations - Water Temperature
Station N_Data N_Years Period of Record Median tau SennIntercept SennSlope p
10 18268 3 2020 - 2022 27.72 - - - -
11 228643 18 2003 - 2022 26.81 0.3 26.1 0.06 0.0000
12 138064 13 2008 - 2022 27.16 0.21 26.39 0.06 0.0020
14 223851 19 2002 - 2022 26.84 0.24 26.31 0.06 0.0000
15 212659 17 2006 - 2022 26.99 0.19 26.4 0.05 0.0006
18 44119 7 2016 - 2022 27.03 0.13 26.59 0.06 0.2890
21 55870 7 2016 - 2022 27.18 0.13 26.51 0.04 0.2228
22 171553 14 2009 - 2022 26.91 0.25 26.43 0.07 0.0000
23 113161 11 2012 - 2022 27.33 0.19 26.83 0.07 0.0111
24 111388 11 2010 - 2022 26.89 0.33 26.12 0.09 0.0000
25 117274 12 2010 - 2022 27.19 0.08 27.07 0.03 0.2669
26 142040 14 2009 - 2022 26.96 0.21 26.97 0.06 0.0024
30 116701 11 2012 - 2022 26.62 0.21 26.3 0.05 0.0055
32 223104 18 2003 - 2022 26.69 0.31 26.09 0.06 0.0000
33 38112 6 2016 - 2022 27.13 0.08 26.23 0.01 0.6585
34 274006 21 2002 - 2022 26.74 0.3 26.19 0.07 0.0000
35 217666 17 2006 - 2022 26.84 0.22 26.41 0.05 0.0000
36 192871 16 2007 - 2022 26.89 0.24 26.52 0.06 0.0001
37 52521 7 2016 - 2022 26.74 0.07 26.3 0.05 0.4651
38 256177 21 2002 - 2022 26.47 0.28 26.15 0.06 0.0000
39 33723 5 2018 - 2022 27.01 -0.09 27.6 -0.08 0.6877
40 244138 21 2002 - 2022 26.79 0.28 26.27 0.07 0.0000
50 103998 10 2013 - 2022 27.01 0.23 26.85 0.05 0.0035
51 222780 18 2003 - 2022 26.67 0.31 26.27 0.06 0.0000
52 188237 15 2008 - 2022 26.92 0.34 26.63 0.07 0.0000
53 179447 15 2008 - 2022 26.98 0.37 26.53 0.07 0.0000
54 130399 11 2012 - 2022 27.06 0.25 26.77 0.06 0.0002
55 225636 21 2002 - 2022 26.86 0.28 26.79 0.05 0.0000
56 175648 17 2006 - 2022 26.67 0.14 26.67 0.03 0.0187
57 187914 15 2008 - 2022 26.96 0.3 26.66 0.07 0.0000
58 72230 9 2014 - 2022 27.11 0.01 27.23 0.01 0.9631
59 191677 18 2002 - 2022 26.81 0.27 26.85 0.05 0.0000
60 150013 14 2009 - 2022 26.94 0.17 27.07 0.04 0.0094
61 54044 7 2016 - 2022 27.06 0.15 26.58 0.05 0.1513
70 104819 10 2013 - 2022 26.91 0.22 26.73 0.05 0.0044
72 188119 15 2008 - 2022 26.77 0.42 26.42 0.08 0.0000
73 179435 15 2008 - 2022 26.74 0.35 26.49 0.07 0.0000
74 130333 11 2012 - 2022 26.87 0.24 26.64 0.05 0.0005
75 144589 13 2010 - 2022 27.06 0.27 26.71 0.07 0.0001
76 168914 14 2009 - 2022 26.84 0.23 26.82 0.05 0.0002
77 188336 15 2008 - 2022 26.89 0.27 26.57 0.07 0.0000
78 87924 9 2014 - 2022 26.98 0.11 26.81 0.03 0.1925
79 175394 16 2007 - 2022 26.79 0.21 26.56 0.04 0.0006
80 167362 14 2009 - 2022 26.87 0.21 26.92 0.05 0.0005
81 53957 7 2016 - 2022 27.03 0.13 26.63 0.05 0.2247
83 130599 16 2006 - 2022 25.79 0.14 25.79 0.04 0.0106
Continuous Water Quality
Continuous Water Quality
Seasonal Kendall-Tau Results for All Stations - Water Temperature
Station N_Data N_Years Period of Record Median tau SennIntercept SennSlope p
FKNMS_200YR_HD 44601 12 1998 - 2009 26.10 -0.1 26.45 -0.04 0.1720
FKNMS_7MILE_BR 73055 19 1991 - 2010 26.66 0.05 26.22 0.01 0.3549
FKNMS_9FT_SHOAL 80299 21 1990 - 2010 26.50 0 26.76 0 0.9917
FKNMS_ALLIGATOR 65144 19 1990 - 2010 26.55 -0.06 26.72 -0.01 0.2339
FKNMS_BHONDA_BR 77111 22 1990 - 2011 26.60 -0.02 26.67 0 0.6571
FKNMS_BOCA_GRND 73434 17 1990 - 2012 26.14 0.08 26.04 0.01 0.1662
FKNMS_BULLARD 66230 18 1992 - 2009 26.31 0.12 26.11 0.02 0.0313
FKNMS_CARD_SND 18249 6 2001 - 2006 26.52 -0.05 27.32 -0.05 0.7909
FKNMS_CARYSFORT 55001 16 1990 - 2006 26.40 -0.03 26.38 0 0.6354
FKNMS_DIEGO_TER 16693 5 2002 - 2006 25.58 -0.05 25.91 -0.03 0.8407
FKNMS_ELPIS 31035 8 2004 - 2011 26.35 0.06 25.9 0.04 0.5313
FKNMS_GRECIAN 51723 18 1990 - 2010 26.65 -0.03 26.48 0 0.6634
FKNMS_HARBORKEY 15407 5 1992 - 1997 26.50 0.14 25.74 0.14 0.3261
FKNMS_HEN&CHIX 72285 21 1989 - 2011 26.50 -0.01 26.35 0 0.8763
FKNMS_KW_CHANL 123578 18 1991 - 2012 26.27 0.1 26.11 0.02 0.0805
FKNMS_LONG_KEY 69656 19 1990 - 2010 26.64 -0.03 26.35 -0.01 0.5769
FKNMS_LOOE_BACK 84984 18 1990 - 2012 26.80 -0.06 26.6 -0.01 0.4216
FKNMS_LOOE_BUOY5 35252 10 1988 - 1998 26.90 0.05 26.86 0.02 0.3627
FKNMS_LOOE_ISELIN 194367 13 1999 - 2014 26.88 0.13 26.55 0.03 0.0801
FKNMS_MAITLAND 12421 4 2004 - 2007 26.07 - - - -
FKNMS_MOLASSES 36146 13 1990 - 2002 26.70 -0.05 26.74 -0.01 0.4806
FKNMS_NEWGROUND 35329 12 1992 - 2006 25.49 -0.05 25.73 -0.01 0.5207
FKNMS_PILLAR 40805 11 1996 - 2006 26.24 0.02 26.04 0.01 0.9363
FKNMS_SAND_KEY 59287 18 1990 - 2010 26.70 0.05 26.46 0.01 0.3230
FKNMS_SMITH_SHL 94527 10 1998 - 2012 25.45 0.13 25.99 0.02 0.1933
FKNMS_SNAKE_CRK 56777 19 1989 - 2007 26.16 -0.06 26.33 -0.02 0.2771
FKNMS_SOMBRERO 48974 13 1991 - 2005 26.50 0.13 26.14 0.03 0.0508
FKNMS_SPRIGGER 41834 13 1992 - 2006 26.10 0.02 25.78 0 0.8553
FKNMS_TENN_REEF 63260 16 1990 - 2006 26.70 -0.06 26.22 -0.01 0.2738
FKNMS_WELLWOOD 30427 8 2002 - 2009 26.43 0 26.82 0 1.0000
FKNMS_WS_BUOY16 8123 3 2003 - 2005 25.99 - - - -
FKNMS_WS_JACKYL 29557 9 1991 - 1999 26.40 0.17 26.96 0.06 0.0860
FKNMS_W_SAMBO 18786 6 1990 - 1995 26.90 0.09 26.16 0.03 0.5597

Submerged Aquatic Vegetation

The data file used is: All_SAV_Parameters-2024-Feb-23.txt

Submerged aquatic vegetation (SAV) refers to plants and plant-like macroalgae species that live entirely underwater. The two primary categories of SAV inhabiting Florida estuaries are benthic macroalgae and seagrasses. They often grow together in dense beds or meadows that carpet the seafloor. Macroalgae include multicellular species of green, red and brown algae that often live attached to the substrate by a holdfast. They tend to grow quickly and can tolerate relatively high nutrient levels, making them a threat to seagrasses and other benthic habitats in areas with poor water quality. In contrast, seagrasses are grass-like, vascular, flowering plants that are attached to the seafloor by extensive root systems. Seagrasses occur throughout the coastal areas of Florida, including protected bays and lagoons as well as deeper offshore waters on the continental shelf. Seagrasses have taken advantage of the broad, shallow shelf and clear water to produce two of the most extensive seagrass beds anywhere in continental North America.

Parameters

Percent Cover measures the fraction of an area of seafloor that is covered by SAV, usually estimated by evaluating multiple small areas of seafloor. Percent cover is often estimated for total SAV, individual types of vegetation (seagrass, attached algae, drift algae) and individual species.

Frequency of Occurrence was calculated as the number of times a taxon was observed in a year divided by the number of sampling events, multiplied by 100. Analysis is conducted at the quadrat level and is inclusive of all quadrats (i.e., quadrats evaluated using Braun-Blanquet, modified Braun-Blanquet, and percent cover.”

Species

Turtle grass (Thalassia testudinum) is the largest of the Florida seagrasses, with longer, thicker blades and deeper root structures than any of the other seagrasses. It is considered a climax seagrass species.

Shoal grass (Halodule wrightii) is an early colonizer of vegetated areas and usually grows in water too shallow for other species except widgeon grass. It can often tolerate larger salinity ranges than other seagrass species. Shoal grass is characterized by thin, flat blades, that are narrower than turtle grass blades.

Manatee grass (Syringodium filiforme) is easily recognizable because its leaves are thin and cylindrical instead of the flat, ribbon-like form shared by many other seagrass species. The leaves can grow up to half a meter in length. Manatee grass is usually found in mixed seagrass beds or small, dense monospecific patches.

Widgeon grass (Ruppia maritima) grows in both fresh and salt water and is widely distributed throughout Florida’s estuaries in less saline areas, particularly in inlets along the east coast. This species resembles shoal grass in certain environments but can be identified by the pointed tips of its leaves.

Three species of Halophila spp. are found in Florida - Star grass (Halophila engelmannii), Paddle grass (Halophila decipiens), and Johnson’s seagrass (Halophila johnsonii). These are smaller, more fragile seagrasses than other Florida species and are considered ephemeral. They grow along a single long rhizome, with short blades. These species are not well-studied, although surveys are underway to define their ecological roles.

Notes

Star grass, Paddle grass, and Johnson’s seagrass will be grouped together and listed as Halophila spp. in the following managed areas. This is because several surveys did not specify to the species level:

  • Banana River Aquatic Preserve

  • Indian River-Malabar to Vero Beach Aquatic Preserve

  • Indian River-Vero Beach to Ft. Pierce Aquatic Preserve

  • Jensen Beach to Jupiter Inlet Aquatic Preserve

  • Loxahatchee River-Lake Worth Creek Aquatic Preserve

  • Mosquito Lagoon Aquatic Preserve

  • Biscayne Bay Aquatic Preserve

  • Florida Keys National Marine Sanctuary

SAV - Temporal Scope
Maps showing the temporal scope of SAV sampling sites within the boundaries of Florida Keys National Marine Sanctuary by Program name.

Sampling locations by Program:

SAV - Sampling Map
Map showing SAV sampling sites within the boundaries of Florida Keys National Marine Sanctuary. The point size reflects the number of samples at a given sampling site.

Florida Keys National Marine Sanctuary Seagrass Monitoring Project - Program 296
N_Data YearMin YearMax Collection Method Sample Locations
4200 1996 2021 Braun Blanquet 40
Miami-Dade County DERM Benthic Habitat Monitoring Program - Program 4018
N_Data YearMin YearMax Collection Method Sample Locations
3565 1999 2022 Braun Blanquet 114
279 1999 2007 Percent Cover 67
The South Florida Fisheries Habitat Assessment Program (FHAP) - Program 4049
N_Data YearMin YearMax Collection Method Sample Locations
93173 2005 2022 Braun Blanquet 1136
South Florida Seagrass Fish and Invertebrate Assessment Network - Program 965
N_Data YearMin YearMax Collection Method Sample Locations
65538 2005 2011 Braun Blanquet 30
SAV
Median percent cover by species in Florida Keys National Marine Sanctuary. Linear mixed-effects models are applied to each species to produce species trends. The trendlines are then isolated and reproduced below for ease of viewing. The LME results are available in table form beneath the supplemental trendplot below.
SAV
SAV
SAV

SAV
Generalized additive models for each species in Florida Keys National Marine Sanctuary. Species must have at least 10 years of data to be evaluated.

Drift algae, Total seagrass, Attached algae, and Total SAV are excluded from the analyses.

Coral Reef

The data file used is: All_CORAL_Parameters-2024-Feb-23.txt
Coral

Coral
Coral